How much is the percentage ionization of an electrolyte to classified is as 'weak electrolyte'?

(d) : Given that pKa = 4.8 and pKb = 4.78 Therefore,  pH = 7 + 1/2 (pK a – pKb ) = 7 + 1/2 (4.80 – 4.78) = 7.01

This is because hydrogen bonding is multidimensional in water whereas in HF it is linear.

The electronic configurations of Na and Mg are: Na:1s2 2s2 2p6 3s1 And Mg: 1s2 2s2 2p6 3s2 thus, the first electron in both the cases has to be removed...

HCl + HOH -------->  Cl- + H3O+  CH3COOH + HOH -------->  CH3COO- + H3O+  HCl is strong acid but chloride ion is a weak base similarly CH3COOH is weak acid but CH3COO-...

Ka x Kb =Kw  Kb= Kw/Ka  =1 x10-14/1.8x10-8  =5.55x10-7

 Cl - ion Conjugate base H3O+ ion Conjugate base,

 P= weak base , Q=Strong acid, R=weak acid S= strong base , T= Strong acid , U=strong base

If (A) is correct but (R) is wrong

(a)Monobasic and a weak Lewis acid

Acids which ionize completely in aqueous solution-strong acids. Acids which ionize partially in aqueous solution-weak acids Hydrochloric acid, nitric acid-strong acid Acetic acid, formic acid-weak acid